NERC RC 200 EXAM PREP QUESTIONS AND VERIFIED ANSWERS
2026/2027 || RELIABILITY COORDINATOR CERTIFICATION || BULK
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QUESTIONS & ACCURATE ANSWERS || HIGH-YIELD STUDY GUIDE ||
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200 exam questions and answers
When does the Contingency Reserve Restoration Period begin?
A. At the top of the hour after the Reportable Disturbance
B. At the start of the Reportable Disturbance
C. At the end of the Disturbance Recovery Period
D. When all Contingency Reserve has been exhausted - CORRECT ANSWER -
C. At the end of the Disturbance Recovery Period
Which of the following terms is defined as the scan rate values of a Balancing
Authority's ACE measured in MW, which includes the difference between the
Balancing Authority's Net Interchange Actual and its Net Interchange Scheduled,
plus its Frequency Bias obligation, plus any known meter error?
A. Automatic Time Error
B. Reporting ACE
C. ACE Control Error
D. Reserve Sharing Group Reporting - CORRECT ANSWER - B. Reporting
ACE
Which of the following terms applies to the Western Interconnection only, and the
addition of a component to the ACE equation that modifies the control point for
,the purpose of continuously paying back Primary Inadvertent Interchange to
correct accumulated time error?
A. Reporting ACE
B. Automatic Time Error Correction
C. Reserve Sharing Group Reporting ACE
D. Regulation Reserve Sharing Group - CORRECT ANSWER - B. Automatic
Time Error Correction
You are a Balancing Authority Operator. A neighboring Balancing Authority in the
Interconnection suddenly has a 500 MW generator trip due to a generator ground.
What part of the ACE equation, ACE = (NIA-NIS) - 10B (FA-FS) - IME, allows
you and other Balancing Authorities in the Interconnection to help stabilize the
Interconnection frequency error?
A. (FA- FS) - IME
B. NIA - NIS
C. 10B (FA-FS)
D. 4 IME - CORRECT ANSWER - C. 10B (FA-FS)
Balancing Authority A is scheduled to import a net 200 MW and is actually
importing a net 150 MW. The Bias Setting is -100 MW/.1 HZ and Actual
Frequency is 59.95 Hz. What is Balancing Authority A's ACE reading?
A. +100 MW
,B. -100 MW
C. 0 MW
D. -55 MW - CORRECT ANSWER - C. 0 MW
Which of the following elements is NOT included in the ACE equations frequency
component?
A. Actual Frequency (FA)
B. Scheduled Frequency (FS)
C. Frequency Bias Setting (B)
D. Meter Error (IME) - CORRECT ANSWER - D. Meter Error (IME)
A Balancing Authority is slightly undergenerating its Actual System Frequency
(FA) is 60.03 Hz. What is the result of the Balancing Authority's action?
A. The Balancing Authority is helping the Interconnection Frequency.
B. The Balancing Authority is in CPS1 violation.
C. The Balancing Authority is hurting the Interconnection Frequency.
D. The Balancing Authority is in BAAL violation - CORRECT ANSWER - A.
The Balancing Authority is helping the Interconnection Frequency
Which statement best describes the CPS1 requirement?
A. ACE must follow changes in load and schedule within a bandwidth called L10.
, B. The Responsible Entity must operate so its CPS1 is greater than or equal to
100% for the preceding 12-month period.
C. The average ACE for a defined 10-minute period must be within a limit called
L10.
D. ACE must start to return to zero one minute after crossing zero. - CORRECT
ANSWER - B. The Responsible Entity must operate so its CPS1 is greater than or
equal to 100% for the preceding 12-month period
A Balancing Authority's CPS1 calculation is computed using its clock-minute
average of two values. What are those two values?
A. Reporting ACE and Frequency Error
B. Actual and Scheduled Net Interchange NIA and NIS.
C. L10 and Reporting ACE
D. Actual and Scheduled Frequency (FA and FS) - CORRECT ANSWER - A.
Reporting ACE and Frequency Error
To conform to CPS requirements, a Balancing Authority must have which of the
following?
A. CPS1 greater than or equal to 90% or BAAL greater than or equal to 100%.
B. CPS1 greater than or equal to 100% and ACE does not exceed BAAL more than
15 consecutive minutes.
C. CPS1 greater than or equal to 100% and ACE does not exceed BAAL more than
30 consecutive minutes.
2026/2027 || RELIABILITY COORDINATOR CERTIFICATION || BULK
ELECTRIC SYSTEM OPERATIONS & RELIABILITY || VERIFIED
QUESTIONS & ACCURATE ANSWERS || HIGH-YIELD STUDY GUIDE ||
GRADED A+
200 exam questions and answers
When does the Contingency Reserve Restoration Period begin?
A. At the top of the hour after the Reportable Disturbance
B. At the start of the Reportable Disturbance
C. At the end of the Disturbance Recovery Period
D. When all Contingency Reserve has been exhausted - CORRECT ANSWER -
C. At the end of the Disturbance Recovery Period
Which of the following terms is defined as the scan rate values of a Balancing
Authority's ACE measured in MW, which includes the difference between the
Balancing Authority's Net Interchange Actual and its Net Interchange Scheduled,
plus its Frequency Bias obligation, plus any known meter error?
A. Automatic Time Error
B. Reporting ACE
C. ACE Control Error
D. Reserve Sharing Group Reporting - CORRECT ANSWER - B. Reporting
ACE
Which of the following terms applies to the Western Interconnection only, and the
addition of a component to the ACE equation that modifies the control point for
,the purpose of continuously paying back Primary Inadvertent Interchange to
correct accumulated time error?
A. Reporting ACE
B. Automatic Time Error Correction
C. Reserve Sharing Group Reporting ACE
D. Regulation Reserve Sharing Group - CORRECT ANSWER - B. Automatic
Time Error Correction
You are a Balancing Authority Operator. A neighboring Balancing Authority in the
Interconnection suddenly has a 500 MW generator trip due to a generator ground.
What part of the ACE equation, ACE = (NIA-NIS) - 10B (FA-FS) - IME, allows
you and other Balancing Authorities in the Interconnection to help stabilize the
Interconnection frequency error?
A. (FA- FS) - IME
B. NIA - NIS
C. 10B (FA-FS)
D. 4 IME - CORRECT ANSWER - C. 10B (FA-FS)
Balancing Authority A is scheduled to import a net 200 MW and is actually
importing a net 150 MW. The Bias Setting is -100 MW/.1 HZ and Actual
Frequency is 59.95 Hz. What is Balancing Authority A's ACE reading?
A. +100 MW
,B. -100 MW
C. 0 MW
D. -55 MW - CORRECT ANSWER - C. 0 MW
Which of the following elements is NOT included in the ACE equations frequency
component?
A. Actual Frequency (FA)
B. Scheduled Frequency (FS)
C. Frequency Bias Setting (B)
D. Meter Error (IME) - CORRECT ANSWER - D. Meter Error (IME)
A Balancing Authority is slightly undergenerating its Actual System Frequency
(FA) is 60.03 Hz. What is the result of the Balancing Authority's action?
A. The Balancing Authority is helping the Interconnection Frequency.
B. The Balancing Authority is in CPS1 violation.
C. The Balancing Authority is hurting the Interconnection Frequency.
D. The Balancing Authority is in BAAL violation - CORRECT ANSWER - A.
The Balancing Authority is helping the Interconnection Frequency
Which statement best describes the CPS1 requirement?
A. ACE must follow changes in load and schedule within a bandwidth called L10.
, B. The Responsible Entity must operate so its CPS1 is greater than or equal to
100% for the preceding 12-month period.
C. The average ACE for a defined 10-minute period must be within a limit called
L10.
D. ACE must start to return to zero one minute after crossing zero. - CORRECT
ANSWER - B. The Responsible Entity must operate so its CPS1 is greater than or
equal to 100% for the preceding 12-month period
A Balancing Authority's CPS1 calculation is computed using its clock-minute
average of two values. What are those two values?
A. Reporting ACE and Frequency Error
B. Actual and Scheduled Net Interchange NIA and NIS.
C. L10 and Reporting ACE
D. Actual and Scheduled Frequency (FA and FS) - CORRECT ANSWER - A.
Reporting ACE and Frequency Error
To conform to CPS requirements, a Balancing Authority must have which of the
following?
A. CPS1 greater than or equal to 90% or BAAL greater than or equal to 100%.
B. CPS1 greater than or equal to 100% and ACE does not exceed BAAL more than
15 consecutive minutes.
C. CPS1 greater than or equal to 100% and ACE does not exceed BAAL more than
30 consecutive minutes.
